The Space Beyond (The book of Phoenix 2) - Paranormal Romance by Kristie Cook

As members of the Phoenix, Jeric and Leni are thrust into their new lives, expected to lead Earth’s Guardians. But Leni struggles with trusting her own soul, and Jeric is more concerned about keeping Leni safe than meeting others’ demands. When Darkness swarms Lake Haven, they embark on their first mission with little preparation and no idea which soul the Dark hunts.